<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>使用date看看今天是星期几</title>
</head>
<body>
    <script>
        var x=new Date();
        var s=['星期日','星期一','星期二','星期三','星期四','星期五','星期六']
        var y=x.getDay();
       console.log(s[y]);
    </script>
</body>
</html>